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Malachite Azurite & Goethite

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MGR625152

Malachite Azurite & Goethite

Description Tabs

Description
Locality: 
Milpillas Mine, Cuitaca, Santa Cruz Municipality, Sonora, Mexico
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 5.4 × 3.7 cm
Description

The malachite replaced exposed azurite crystals in the center of the specimen, so you still can see the habit of azurite. The malachite shows excellent dark green color, the crystals are highly lustrous and teh texture looks even better in person. The matrix is covered with spheres of sparkling spheres of goethite. Goethite shows color that remined to polished copper. The assemble is very aesthetic, the contrast is superb. No significant damages to report.

Mineral Data
What's on the rock

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany